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LFM

于 2012-08-21 发布文件大小:162KB

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产生一组简单的线性调频chirp信号,帮助大家学习matlab 用于雷达脉冲压缩(creat a simple LFM signal)

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start
用七元线形天线阵（ULA）已知：信号中心波长为2,天线阵元的间距为1米,快拍数为2000，空中有四个源信号,假设它们的频率：0.015, 0.05, 0.02, 0.035 四个源信号的方向分别为：pi/4 pi/3 pi/6 3pi/4 求： 1）在不加入噪声的情况下,画出传统波束形成法、Bartlett波束形成法、Capon波束形成法的空间谱图； 2）在加入高斯白噪声的情况下,假设信噪比为10dB，画出传统波束形成法、Bartlett波束形成法、Capon波束形成法的空间谱图。(7-element linear antenna array (ULA) Known: the signal center wavelength is 2, the antenna element spacing of 1 m, the number of snapshots for 2000, the air there are four Source signal, assuming that their frequency: 0.015, 0.05, 0.02, 0.035 The direction of the four source signals: pi/4 pi/3 pi/6 3pi/4 Requirements: 1) not to join the noise, to draw the traditional beam-forming method, Bartlett, beam Formation method, Capon beamforming method of the space spectrum 2) by adding Gaussian white noise, assuming that the SNR is 10dB, to draw the traditional beam Formation method, Bartlett, beamforming, Capon beamforming method of the space spectrum.)

2012-05-02 16:26:54下载

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实现基于BPSK的直接扩频信号调制，并显示出各阶段信号波形。(Direct-based BPSK modulated spread spectrum signal, and shows the signal waveform of each phase.)

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matlab编程实现FM信号的解调程序，里面有详细的注释。(matlab programming implementation of the FM signal demodulation process, which has detailed notes.)

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2014-11-12 05:07:43下载

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